import streamlit as st

color = st.select_slider(
    "Select a color of the rainbow",
    options=["red", "orange", "yellow", "green", "blue", "indigo", "violet"],
)

st.write("My favorite color is", color)

start_color, end_color = st.select_slider(
    "Select a range of color wavelength",
    options=["red", "orange", "yellow", "green", "blue", "indigo", "violet"],
    value=("red", "blue"),
)

st.write("You selected wavelengths between", start_color, "and", end_color)
